Answer
The best space marine chapter is probably the Ultramarines. Every one of their heroes is very powerful and they have of tough infantry. Also their Heavy armor packs a good punch to any infantry or tank that crosses their path. Last but not least , the Ultramarine chapter can be fielded with pretty much every Imperial army unlike the Dark Angels and Howling Griffons chapters.
Really depends what for.
Personally, the Ultramarines or Blood Ravens are best for me
http://warhammer40k.wikia.com/wiki/Primarch
Check out this link; it is about primarchs but if you scroll down it gives you the primarchs' chapters. Click on them to find out each of their strengths and weaknesses.
Technically, there is no 'best' chapter because each chapter excels at a specific task--the Dark Angels, for example, specialise in fast-attack strategies. Whether a chapter is 'best' depends on what you want them for. For example, the Dark Angels' strategy would be excellent against a small-to-mid-sized army or for assassination of leadership units, but it would have limited effectiveness against a huge horde of troops.
No, only Space Marine chapter masters can.
Answer The Chapter Master of the Salamanders is Tu'Shan.
AnswerYou can create your own chapter as long as it is not copying another official or unofficial chapters. Therefore you can use your chapter when playing the game
No, the Dark Angels are a chapter on their own, and the are regular Space Marines, servants of the Emperor who haven't fallen to Chaos. Their name is misleading however.
Marine Chapter House was created in 1909.
Definately a Demonhunter Grey Knight.
The Fire Hawks (Update) The Legion of the Damned could be a chapter but some say they are ghosts or the Emperor's will manifest.
Space Marine Tactical Squad (includes 10 Space Marines) Space Marine Combat Squad (includes 5 Space marines) Space Marine Rhino Space Marine Scout Squad (includes 5 Space Marine Scouts) Space Marine Assault Squad (includes 5 Space Marines).
It all depends on your playing style
space marine
Depending an how you arm it and what Space Marine Chapter you use, the points vary wildly. In which to get an accurate cost & the most effective armament you should refer to Codex: Space Marine or the codex of the army you are using.
Look in the Space Marine Codex, that's what it is there for.